Workshop Certificate Generator with Google Drive, Gmail & QR Verification

Automated Pre-Issued Workshop Certificate Generator

Description:

This workflow automates the entire pre-issuance process of workshop participation certificates. When an attendee submits a registration form via a webhook, the workflow validates the data, verifies the attendee’s email, generates a unique Certificate ID and QR code, creates a styled certificate image, stores it on Google Drive, emails the certificate to the attendee, logs all details in Google Sheets, and notifies organizers via Slack — all fully automated.

This template is ideal for institutions, event teams, training organizations, hackathons, and workshops that want to automate certificate issuing and remove manual processing.

Key Features:

Webhook-based registration intake** Required field + email validation using VerifiEmail API** Auto-generated Certificate ID, QR code, and verification URL** Dynamic HTML-to-Image certificate generation** Automatic email delivery with certificate attachment (Gmail)** Auto-upload certificate to Google Drive** Real-time Slack notification for organizers** Registration + certificate logging in Google Sheets** Instant webhook response with certificate metadata**

How It Works (Short Summary):

Webhook Trigger receives registration details. Validator checks for mandatory fields (name, email, event). Email verification ensures the email is deliverable. Certificate generation creates unique ID + QR + HTML. HTML-to-Image converts the certificate to PNG. Upload to Google Drive stores the certificate file. Email node sends the certificate to the attendee. Google Sheets logs the registration + certificate details. Slack message notifies organizers instantly. Webhook response returns success JSON.

Use Cases:

Workshops Webinars Training sessions Bootcamps Corporate events Hackathons Student registrations Event ticketing / entry pass systems

Required Credentials:

VerifiEmail API** – email validation at verifi.email HTMLCSStoImage API** – convert certificate HTML to PNG at htmlcsstoimg.com Gmail OAuth2** – send certificate emails Google Drive OAuth2** – store certificate files Google Sheets OAuth2** – logging Slack API** – organizer notifications

Setup Instructions:

Import this template into your n8n instance. Open the Webhook node and copy the generated webhook URL. Use this URL in your registration form / frontend / Postman. Add all required credentials in the Credentials Manager. Customize certificate HTML (colors, branding, logos) if needed. Test with a sample POST request containing all required fields:

name email event date time venue organization designation Enable the workflow.

Input Format (POST Body Required):

{ "name": "John Doe", "email": "john@example.com", "event": "AI Workshop 2025", "date": "25 Nov 2025", "time": "10:00 AM", "venue": "Auditorium Hall", "organization": "Tech University", "designation": "Student" }

Output (Webhook Response):

{ "success": true, "message": "Registration successful! Certificate sent to your email.", "certificateId": "CERT-12345-ABCD", "verifyUrl": "https://workshopverify.com/cert?id=CERT-12345-ABCD" }

Why This Workflow is Useful:

Eliminates manual certificate design & sending Ensures professional, consistent certificates Reduces event staff workload Guarantees accurate data logging Provides instant attendee confirmation Enhances event experience with automation